{"product_id":"john-deere-ah166637-metric-piston-seal-assembly","title":"John Deere Ah166637 Metric Piston Seal Assembly","description":"\u003cp\u003e\u003cstrong\u003eJohn Deere Ah166637 Metric Piston Seal Assembly\u003c\/strong\u003e is a Hercules catalog product available from WQC Parts for hydraulic cylinder, seal kit, pump, motor, valve, and heavy-equipment repair applications.\u003c\/p\u003e \u003cp\u003eThis listing uses Hercules part number \u003cstrong\u003eJD-AH166637\u003c\/strong\u003e. Catalog description: \u003cstrong\u003eUPA-STL\/PA-100mm\u003c\/strong\u003e.\u003c\/p\u003e \u003ch3\u003eProduct Details\u003c\/h3\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHercules part number:\u003c\/strong\u003e JD-AH166637\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Piston seal or piston component\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReference brand\/application:\u003c\/strong\u003e John Deere\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproximate weight:\u003c\/strong\u003e 4.17 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog data source:\u003c\/strong\u003e 2026 US Seal Catalog, 2026 US Cylinder Catalog\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCatalog Application Data\u003c\/h3\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog section:\u003c\/strong\u003e Unitized Pistons\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel or series reference:\u003c\/strong\u003e 45, 75, 99, 97, 100, 00, 33, 63, 56, 02, 051, 19, 25, 587\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStyle \/ kit type:\u003c\/strong\u003e Or By Contacting Your Regional Hercules Sales Team.; JD-AH166637\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog page reference:\u003c\/strong\u003e 633, 91\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eUse this product when your parts book, service manual, cylinder repair list, pump\/motor breakdown, or existing component calls for \u003cstrong\u003eJD-AH166637\u003c\/strong\u003e. It is intended to help restore sealing performance, reduce leakage, and support reliable equipment repair when correctly matched to the application.\u003c\/p\u003e \u003ch3\u003eFitment Verification\u003c\/h3\u003e\u003cp\u003eBefore ordering, confirm the \u003cstrong\u003eJD-AH166637\u003c\/strong\u003e reference against your OEM reference number, machine model, cylinder location, bore and rod size, pump\/motor series, and serial-number range. Manufacturer names and part numbers are used for identification and fitment reference only. If you are unsure, compare the old parts, measurements, and parts-book callout before installation.\u003c\/p\u003e","brand":"HERCULES","offers":[{"title":"Default Title","offer_id":42670247739488,"sku":"JD-AH166637","price":352.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/2922\/4032\/files\/jd-ah166637_heavy-equipment-parts_8b0eda1d-2e5c-43b3-a913-c321356d7559.jpg?v=1779901481","url":"https:\/\/wqcparts.com\/es\/products\/john-deere-ah166637-metric-piston-seal-assembly","provider":"WQC PARTS","version":"1.0","type":"link"}